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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => Project Custom Motobricks => Topic started by: sooprvylyn on April 01, 2024, 03:35:44 PM

Title: Ugly steering nut replacement options?
Post by: sooprvylyn on April 01, 2024, 03:35:44 PM

I'm looking to replace the ugly stock steering nut and bolt on my k1100rs. I've tried an m22x1 nut but it doesn't fit, leading me to conclude the proper thread pitch should be m22 x .75. Anyone know of any options? Also would love to swap out the stock fork caps for something prettier if anyone has any options there, especially something like a preload cap.

Title: Re: Ugly steering nut replacement options?
Post by: milq on April 03, 2024, 10:22:37 PM

I'll see if I can measure the thread pitch on mine (probably Friday)...M22x.75 is REALLY fine threads.

M22x1.0 is considered "extra fine" while M22x1.5 is "fine" thread.

What are you wanting? Acorn style? Special wrench required?

These might not look too bad: https://www.mcmaster.com/products/nuts/thread-size~m22/bearing-nuts~/

Title: Re: Ugly steering nut replacement options?
Post by: sooprvylyn on April 04, 2024, 01:13:42 AM

I don't have a specific style in mind, just looking for something a little more refined than the stock steering nut/bolt situation. The thread seems finer than 1.5 pitch, so I went with a 1 pitch and got about 1.5 turns before it bound up. It might be 1.5 pitch, but I really have a feeling it's .75 since bmw has/had a hard-on for weird proprietary specs for almost everything.. would love to learn from someone w the ability to accurately measure  it

Title: Re: Ugly steering nut replacement options?
Post by: Laitch on April 04, 2024, 09:08:25 AM

Quote from: sooprvylyn on April 04, 2024, 01:13:42 AM

would love to learn from someone w the ability to accurately measure  it

Maybe you could get one of these pitch gauges in millimeters or millimeter/SAE from AutoZone on Rt 41 or NAPA. I bought one from MAC Tools for $10 a few decades ago when I was hired to help repair and build truck bodies. It has always been accurate.
(https://www.motobrick.com/gallery/4/1601-040424085635.png)
There are kits that run into three figures that are even more accurate I guess. Maybe NAPA will loan you one at no charge.

Title: Re: Ugly steering nut replacement options?
Post by: sooprvylyn on April 09, 2024, 03:09:09 PM

Thanks, thats a good idea.

Title: Re: Ugly steering nut replacement options?
Post by: milq on April 12, 2024, 01:28:06 AM

My genius self forgot about the brake line running through everything, so I haven't removed the nut to use a thread pitch gauge. Nor have I been able to find any specs on it.

Title: Re: Ugly steering nut replacement options?
Post by: frankenduck on April 12, 2024, 02:28:49 AM

If you have ugly nuts then you should get a DNA test to find the origin.

Title: Re: Ugly steering nut replacement options?
Post by: sooprvylyn on April 12, 2024, 09:55:10 AM

Quote from: milq on April 12, 2024, 01:28:06 AM

My genius self forgot about the brake line running through everything, so I haven't removed the nut to use a thread pitch gauge. Nor have I been able to find any specs on it.

Yeah, the k75 has that brake line splitter going through the triple. The k1100 doesn't do that tho.  I kinda prefer the k75 method, looks cleaner.